CN101163320B - Method, system and device for obtaining multicast capability and processing bearing - Google Patents
Method, system and device for obtaining multicast capability and processing bearing Download PDFInfo
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- CN101163320B CN101163320B CN2006101319645A CN200610131964A CN101163320B CN 101163320 B CN101163320 B CN 101163320B CN 2006101319645 A CN2006101319645 A CN 2006101319645A CN 200610131964 A CN200610131964 A CN 200610131964A CN 101163320 B CN101163320 B CN 101163320B
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Abstract
An embodiment of the invention discloses a method of obtaining the multicast capability and processing the carrying weight, comprising that a user equipment (UE) obtains the multicast capability information for the access network, and reports the multicast capability information for the access network and self multicast capability to a conversation control entity; the conversation control entity determines whether the single-cast bearer manner or the multicast bearer manner is used for the user equipment to transmit data based on the received multicast capability information for network access and the multicast capability information of the user equipment. In addition, the embodiment of the invention also discloses a system and a device to obtain the multicast capability and process the carrying weight. The method, the system and the device provided by the embodiment of the invention can ensure that the conversation control entity obtains the multicast capability of the user equipment and the multicast capability for the prior access network, and select an appropriate bearer manner based on the multicast capabilities.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of method, system and device that obtain multicast capability and handle carrying.
Background technology
In order to effectively utilize mobile network resource, 3rd Generation Partnership Project (3GPP) has proposed multimedia broadcast/multicast service (MBMS), promptly realize the multicast service of point to multiple spot, multicast service is meant the mode that transmits datagram from a data source to a plurality of targets, compare with the mode of unicast of former point-to-point, can conserve bandwidth, realize that Internet resources share, comprise that mobile core network and access network resources are shared, especially interface-free resources is shared.The MBMS of 3GPP definition not only can realize the classes of messages multicast and the broadcasting of plain text low rate, and can realize the multimedia service multicast and the broadcasting of two-forty.The MBMS business realizes by increasing some new network functional entities and increase the support of MBMS function in existing network entity.As for the GPRS in the access network (GPRS) network, increased functional entity broadcast multicast service center (BM-SC) etc.; And the existing network entity to relating to, increased the support of MBMS function as radio network controller/base station controller (RNC/BSC) in GPRS serving GPRS support node (SGSN), gprs service gateway node (GGSN), the Radio Access Network (RAN) and subscriber equipment entities such as (UE).
In order to use the MBMS business, need conversation control entity to obtain the multicast capability of UE and access network in advance.Yet in some applications, conversation control entity can only obtain the MBMS ability of UE in advance, i.e. multicast capability, and can not obtain the multicast capability of access network.As: in order to save the Internet resources such as bandwidth in the IP Multimedia System (IMS), 3GPP proposes to use the solution of MBMS (IMSoMBMS) in the IMS business, in this scheme, before enabling MBMS, IMS is responsible for the application server (AS) of Business Processing, and promptly conversation control entity can be understood earlier the MBMS ability of UE, then according to the MBMS ability of UE, whether whether decision adopts the MBMS bearer data transmission, promptly adopt the multicast mode to carry out transfer of data to this terminal.
In the above-mentioned application, only rely on the MBMS ability of UE to determine whether adopting the multicast mode not enough often.For example in GPRS network, the foundation of multicast also needs to relate to network entities such as RAN, SGSN and GGSN, though for GGSN, when setting up multicast conversation, existing system can distribute a GGSN with multicast capability for UE, but then need to set up bearing mode according to the actual MBMS ability of RAN and SGSN in the current UE zone of living in for RAN and SGSN, as long as there is an entity not possess the MBMS ability among RAN and the SGSN, then multicast all can not be set up successfully.In addition, when UE moved to another zone by a zone, network entity may change, and different network entities is supported the ability difference of MBMS.In the prior art, because conversation control entity, as AS etc., can only obtain the MBMS ability of UE, and can not obtain the MBMS ability of current network, therefore exist and initiate to set up the blindness of multicast, and when network entity changes, can not select more suitably data transfer mode for UE.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method of obtaining multicast capability and handling carrying on the one hand, a kind of system and device that obtains multicast capability and handle carrying is provided on the other hand, can make conversation control entity obtain the multicast capability of UE and current access network, and bearing mode be handled according to this multicast capability.
The method of obtaining multicast capability and handling carrying provided by the present invention comprises:
User equipment (UE) obtains the multicast capability information of access network, and the access network multicast capability information obtained and the multicast capability information of self are reported conversation control entity;
Conversation control entity is determined to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE according to described access network multicast capability information that receives and the multicast capability information of UE.
The system that obtains multicast capability and handle carrying provided by the present invention comprises: user equipment (UE), access network entity and conversation control entity, wherein,
The access network entity is used for the multicast capability information to UE transmission access network;
UE is used to receive the multicast capability information of described access network, and the multicast capability information of the access network that received and the multicast capability information of self are reported conversation control entity;
Conversation control entity is used to receive the multicast capability information of described access network and the multicast capability information of UE, according to the multicast capability information that is received, determines to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
The device that obtains multicast capability and handle carrying provided by the present invention comprises: obtain the UE of multicast capability and obtain the conversation control entity that multicast capability is also handled carrying.
Wherein, obtain the UE of multicast capability, comprising: multicast capability acquisition module and multicast capability sending module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of access network, and the multicast capability information of the access network that obtained is sent to sending module;
The multicast capability sending module is used for the multicast capability information of the access network that will be received and the multicast capability information of self and sends to conversation control entity.
Obtain multicast capability and handle the conversation control entity that carries, comprising: multicast capability acquisition module and carrying processing module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of user equipment (UE) and access network, and the multicast capability information of being obtained is sent to the carrying processing module;
The carrying processing module is used for according to the multicast capability information that is received, and determines to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
From such scheme as can be seen, UE obtains the multicast capability of access network in the embodiment of the invention, and the access network multicast capability that obtained and the multicast capability information of self are reported conversation control entity; The described multicast capability information that conversation control entity reports according to UE is determined to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.Thereby make conversation control entity not only can obtain the multicast capability of UE, and can obtain the multicast capability of access network, conversation control entity can be according to the multicast capability of UE and access network then, determine whether to adopt the multicast bearing mode to carry out transfer of data, thereby further avoided initiating to set up the blindness of multicast, and further, the network area takes place when moving at UE, can be UE and choose suitable bearing mode and carry out transfer of data.
Description of drawings
Fig. 1 is for obtaining multicast capability and handling the method flow diagram that carries in the embodiment of the invention;
Fig. 2 is obtaining multicast capability and handling the system configuration schematic diagram that carries based on method embodiment shown in Figure 1;
Fig. 3 is concrete group network system structural representation of using in the embodiment of the invention;
Fig. 4 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example one of the present invention;
Fig. 5 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example two of the present invention;
Fig. 6 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example three of the present invention.
Embodiment
The basic thought of the embodiment of the invention is: UE obtains the multicast capability of access network, and the access network multicast capability that obtained and the multicast capability information of self are reported conversation control entity; The described multicast capability information that conversation control entity reports according to UE is determined to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
Referring to Fig. 1, Fig. 1 is for using the method flow diagram that above-mentioned thought is obtained multicast capability and handled carrying in the embodiment of the invention.This flow process comprises the steps:
In this step, be that GPRS network is that example describes with the access network, the method that UE obtains the access network multicast capability can have a variety of.The part method can be referring to following introduction:
When UE obtains the multicast capability of RAN, can arrange in advance: if RAN has the MBMS multicast capability under the sub-district, then can be by the RNC/BSC among the RAN periodically to the RAN overlay area broadcasting information relevant with MBMS, UE can judge that this RAN has multicast capability by receiving this broadcast; If RAN does not have the MBMS multicast capability under the sub-district, then the RNC/BSC among the RAN can be periodically to the RAN overlay area broadcasting information relevant with MBMS, and UE can judge that current RAN does not have multicast capability according to not receiving multicast information.
When UE obtains the multicast capability of SGSN, when the SGSN change takes place in UE in initially setting up session or conversation procedure, routed domain can take place to be upgraded, this moment, SGSN can send the information whether this SGSN has the MBMS multicast capability to UE, then UE can obtain the multicast capability of SGSN from this information, when the SGSN change perhaps took place, target SGSN can be told the multicast capability of self service SGSN, was indicated to UE by service SGSN then.Wherein, target SGSN is the SGSN in the zone that will enter of being moved, and service SGSN is the SGSN in the zone that will leave when being moved.
Perhaps, SGSN can inquire about the RNC/BSC among the current RAN that the user is provided service, obtain the information whether this RAN supports MBMS by inquiry, be used for SGSN when whether the UE indication self has multicast capability, indicate current RAN whether to have multicast capability to UE, or indicate an integration capability, promptly when SGSN and RAN support MBMS, then transmit the information that access network has multicast capability,, just transmit the information that access network does not have multicast capability as long as there is one not support MBMS.
The above-mentioned preferable implementation method of obtaining access network capability for UE, the i.e. multicast capability that not only needs to obtain the multicast capability of RAN but also need to obtain SGSN, in the practical application, UE also can only obtain the multicast capability of RAN or only obtain the multicast capability of SGSN, with the information of the multicast capability of the multicast capability information of the RAN that obtained or SGSN multicast capability information as access network, and acquisition methods can be identical with said method, also can be different.
UE determines comprehensive multicast capability according to the multicast capability of the access network that is obtained and the multicast capability of self, if access network and self all have multicast capability, then comprehensive multicast capability is for having multicast capability; If access network and self have one not have multicast capability among the two, then comprehensive multicast capability reports conversation control entity with comprehensive multicast capability information then for not having multicast capability.
Perhaps UE reports conversation control entity with the comprehensive multicast capability information of access network and the multicast capability information of self.
Perhaps UE reports conversation control entity with each network entity in the access network that is obtained as the multicast capability information of SGSN in the GPRS network and RAN and the multicast capability information of self.
Conversation control entity, receive the multicast capability information that UE reports as the AS among the IMS, this multicast capability information can be comprehensive multicast capability information, also can be the comprehensive multicast capability information of access network and the ability information of UE self, can also be the multicast capability information of each network entity in the access network and the ability information of UE self, AS is according to the multicast capability information that is received then, determine comprehensive multicast capability information, according to this comprehensive multicast capability information, determine to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
If comprehensive multicast capability information is for having multicast capability, then can make a strategic decision and adopt the multicast bearing mode to carry out transfer of data, also can make a strategic decision and adopt the unicast bearer mode to carry out transfer of data, such as the number of users in a session after a little while, wouldn't adopt the multicast bearing mode, along with other users' adding session, after the number of users that can adopt the multicast mode reaches certain value, adopt the multicast bearing mode again; If comprehensive multicast capability information is not for having multicast capability, then decision-making adopts the unicast bearer mode to carry out transfer of data.
When initially setting up session, the said method flow process can further comprise: conversation control entity is before receiving the multicast capability information that UE reports, adopt the unicast bearer mode to carry out transfer of data to UE earlier, conversation control entity can be initiated the inquiry of UE and access network multicast capability to UE then, can not initiate inquiry yet, and initiatively send by UE to UE.If receive the multicast capability information that UE reports and determine comprehensive multicast capability, then can make a strategic decision and adopt the multicast bearing mode to carry out transfer of data afterwards, also can make a strategic decision and continue maintenance unicast bearer mode and carry out transfer of data for having multicast capability; If comprehensive multicast capability information is not for having multicast capability, then decision-making continues to keep the unicast bearer mode to carry out transfer of data.Certainly, during specific implementation, also can adopt the unicast bearer mode to carry out transfer of data to UE earlier.
When moved the generation network area during session was carried out, the multicast capability that UE obtains target access network reports conversation control entity, conversation control entity is determined comprehensive multicast capability then, if comprehensive multicast capability information is for having multicast capability, then can make a strategic decision and adopt the multicast bearing mode to carry out transfer of data, also can make a strategic decision and continue to keep the unicast bearer mode to carry out transfer of data; If comprehensive multicast capability information is not for having multicast capability, then decision-making adopts the unicast bearer mode to carry out transfer of data.
As seen, when UE when non-multicast overlay area moves to the multicast overlay area, the multicast capability information that conversation control entity reports according to UE determines that comprehensive multicast capability is for having multicast capability, come the triggering session controlled entity to set up the multicast carrying with this, certainly, then conversation control entity can be made a strategic decision and do not adopted the multicast mode, and still carry out transfer of data with mode of unicast, also can make a strategic decision and adopt the multicast mode to carry out transfer of data, make bearing mode more flexible, if certainly decision-making adopts the multicast mode to carry out transfer of data, can conserve bandwidth, realize resource-sharing.
When UE moves to non-multicast overlay area from the multicast overlay area, the multicast capability information that conversation control entity reports according to UE determines that comprehensive multicast capability is not for having multicast capability, come the triggering session controlled entity to adopt mode of unicast to carry out transfer of data with this, thereby can finish the switching of data, guarantee professional continuity.
Referring to Fig. 2, Fig. 2 is obtaining multicast capability and handling the system configuration schematic diagram that carries based on method embodiment shown in Figure 1.As shown in Figure 2, this system comprises: UE200, conversation control entity 210 and access network entity 220.
Wherein, access network entity 220 is used for sending to UE200 the multicast capability information of access network.
UE200 is used to receive the multicast capability of access network, and the access network multicast capability information obtained and the multicast capability information of self are reported conversation control entity 210.
As shown in Figure 2, during specific implementation, UE200 comprises at least: multicast capability acquisition module 201 and multicast capability sending module 202.
Wherein, multicast capability acquisition module 201 is used to obtain the multicast capability of access network, and the multicast capability information of the access network that obtained is sent to multicast capability sending module 202.
Multicast capability sending module 202 is used for the multicast capability information of the access network that will be received and the multicast capability information of self and sends to application server conversation control entity 210.
Wherein, multicast capability sending module 202 can be further used for: go out comprehensive multicast capability information according to the multicast capability information of the access network that is received and the multicast capability information decision of self, comprehensive multicast capability information is sent to conversation control entity 210.
During specific implementation, conversation control entity 210 comprises at least: multicast capability acquisition module 211 and carrying processing module 212.
Wherein, multicast capability acquisition module 211 is used to obtain the multicast capability of UE200 and access network, and the multicast capability information of being obtained is sent to carrying processing module 212.
Wherein, the specific implementation process of each functional entity and module can be consistent with the description in the flow process shown in Figure 1, and access network entity 220 can comprise SGSN in the GPRS access network and RAN etc., and conversation control entity 210 can be AS in the IMS business etc.
Embodiment to the device entity in said method, system and the system is described in detail below in conjunction with concrete application.With the access network is GPRS network, and conversation control entity is AS, and the situation of using the MBMS business in IMS is an example.
Referring to Fig. 3, Fig. 3 is concrete group network system structural representation of using in the embodiment of the invention.As shown in Figure 3, this group network system comprises: UE301, RAN302, SGSN303, GGSN304, BM-SC305, AS306, call conversation control function entity (CSCFs) 307, media resource function entity (MRF) 308 and home signature user server (HSS) 309.
Wherein, UE301 support to activate, deexcitation MBMS multicast service, is used to obtain the multicast capability of access network GPRS, and the GPRS multicast capability that obtained and the multicast capability information of self are reported AS.And UE can comprise multicast capability acquisition module 201 shown in Figure 2 and multicast capability sending module 202 at least, and function also can be consistent with the description among Fig. 2.The multicast capability of the GPRS that is obtained comprises the multicast capability of RAN302 and the multicast capability of SGSN303.
AS306 is used for the IMS business of using the MBMS multicast is controlled, be used to receive multicast capability information from UE, according to the multicast capability information that is received, to determine UE301 is adopted unicast bearer mode or multicast bearing mode, Control Network is set up corresponding bearing mode and is carried out transfer of data.Wherein, notify MRF308 to set up carrying as required.During specific implementation, AS306 can comprise multicast capability acquisition module shown in Figure 2 211 and carrying processing module 212 at least, and function also can be consistent with the description among Fig. 2.
BM-SC305 is content provider's a inlet, be used for authorizing and initiation MBMS multicast bearer service, and plan transmits the MBMS content on schedule.Its function comprises: (1) is to authentication, mandate and the charging of third party content supplier; (2) provide MBMS transmission relevant parameter, as QoS, multicast and broadcast zone; Initiate and stop the MBMS transfer resource; (3) receive and transmit the MBMS content from external data source, arrange the MBMS session to transmit and inform the user; Session re-transmission etc.; (4) service statement comprises media description, conversation description such as multicast service identifier, address, delivery time etc.
RAN302 comprises GSM (EDGE) Access Network (GERAN) of Universal Terrestrial Radio Access Network (UTRAN) and global system for mobile communications (GSM)/enhancing etc., transmits the MBMS data by RNC/BSC at predetermined multicast or broadcast service zone; Support core net to initiate and stop MBMS to transmit; Support MBMS recipient moving between RNC/BSC.
SGSN303 carries out network control to the user, supports MBMS recipient moving between SGSN; The notice foundation or the release that send according to GGSN are connected with the carrying of RAN and GGSN.
GGSN304 is as the IP multicast service node of MBMS data, is that multicast service transmits and sets up or discharge user plane bearer according to the notice request of BM-SC; Receive the IP multicast content from BM-SC or other data source, go forward side by side walking along the street by.
CSCFs307 and HSS309 are used for cooperation and finish session foundation and authentication.Wherein CSCFs comprises: proxy CSCF (P-CSCF), inquiry CSCF (I-CSCF) and serving CSCF (S-CSCF).
The basic thought of the embodiment of the invention both can be applicable to when initially setting up session, can be applicable to session again and the network area took place when moving in carrying out.Therefore, easy for describing, will initially set up the flow process that session and session take place to move the network area in carrying out below and combine, the method for obtaining multicast capability and handling carrying based on group network system shown in Figure 3 is enumerated several application embodiment.
Application Example one
Should be with among the embodiment, UE has multicast capability, and the service access network of initially setting up session do not have multicast capability, and UE the network area took place when moving during session was carried out, target access network has multicast capability, and promptly UE is by supporting the multicast zone to move to the zone of not supporting multicast.And suppose to move when taking place, change has all taken place in SGSN and RAN, the wherein SGSN of service access network and RAN, be designated as RAN0 and SGSN0 and all do not have multicast capability, the SGSN of target access network and RAN, be designated as RAN1 and SGSN1 and all have multicast capability, in order to embody preferred version, should be with requiring UE to obtain the multicast capability of RAN and SGSN simultaneously among the embodiment.And, should with among the embodiment when initially setting up session, no matter whether receive the multicast capability information that UE reports, all at first set up the transfer of data of unicast bearer mode, AS initiates the inquiry of multicast capability to UE then.When UE obtains the multicast capability of access network, obtain the multicast capability of RAN by the broadcast of RAN.
Referring to Fig. 4, Fig. 4 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example one of the present invention.Some step is an existing step in the prior art in this flow process, for for simplicity, be outstanding flow process of the present invention simultaneously, among Fig. 4 to some with prior art in identical some flow processs no longer describe in detail, and represent information interaction with the mode that hexagon covers, by the entity that hexagon covers, expression has participated in interaction flow, and other method flow diagram also adopts this mode to handle herein.This flow process comprises the steps:
Step 401～step 403, UE is when routing update, obtain SGSN0 and do not have multicast capability, from the broadcast of RAN0, obtain RAN0 and do not have multicast capability, UE for not having multicast capability, determines that comprehensive multicast capability is not for having multicast capability according to the multicast capability of SGSN0 that is obtained and RAN0 afterwards.
Step 404, when initially setting up session, network side is at first set up the transfer of data of unicast bearer mode for UE.
Identical in specific implementation process in this step and the prior art, no longer it is set up process in detail herein and be described.And this step and step 401～step 403 and step 405～step 406 does not have precedence relationship.
Step 405～step 406, AS initiates the inquiry of UE and access network multicast capability to UE, and UE returns comprehensive multicast capability for not having multicast capability to AS.
Herein, AS can pass through notice (INFO) message of initial session protocol (SIP) or SIP and select (OPTIONS) message etc. to initiate the inquiry of UE and access network multicast capability to UE, and UE can return comprehensive multicast capability for not having multicast capability to AS by SIP 200OK message etc.
The network area during session is carried out, takes place and moves in step 408, and UE moves to RAN1/SGSN1 from RAN0/SGSN0.
In this step, finish the handoff procedure that unicasts to clean culture according to prior art.
Step 409～step 411, UE is when routing update, obtain SGSN1 and have multicast capability, from the broadcast of RAN1, obtain RAN1 and have multicast capability, afterwards UE according to the multicast capability of SGSN1 that is obtained and RAN1 for having multicast capability, and the multicast capability that self has, determine that comprehensive multicast capability is for having multicast capability.
Step 412～step 414, UE has the information of multicast capability according to determined comprehensive multicast capability to the AS transmission, and AS returns the affirmation response message to UE, is subjected to UE to report the triggering of this ability information, and AS determines to adopt the multicast bearing mode.
Herein, UE can send to AS by SIP INFO or SIP OPTIONS message etc. have the information of multicast capability, and AS can return the affirmation response message to UE by SIP 200OK message etc.
Step 415～step 416, AS and BM-SC prepare the multicast transmission resource, download information about firms, and control the downlink data transmission between MRF and BM-SC as required.
Step 417～step 419, AS sends the multicast bearing mode to UE and sets up information, carries out the bearing mode change, and UE adds the multicast group, carries out multicast bearing mode transfer of data then.
Wherein, step 415～step 419 is also consistent with flow process of the prior art.
Application Example two
Should make some and change of embodiment on the basis of Application Example one, the service access network of promptly initially setting up session does not have multicast capability, and when moved the generation network area during session was carried out, target access network had multicast capability.Promptly hypothesis moves when taking place, and has only RAN that change has taken place, and wherein the SGSN of service access network has multicast capability, and RAN does not have multicast capability, and the RAN of target access network has multicast capability.
Referring to Fig. 5, Fig. 5 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example two of the present invention.This flow process comprises the steps:
Step 501～step 503, UE obtains SGSN0 and has multicast capability when routing update, obtains RAN0 and do not have multicast capability from the broadcast of RAN0, UE for not having multicast capability, determines that comprehensive multicast capability is not for having multicast capability according to the multicast capability of the RAN0 that is obtained afterwards.
Step 504～step 508 is consistent with the description of step 404～step 408 in the flow process shown in Figure 4.
Step 509～step 510, UE obtains RAN1 and has multicast capability from the broadcast of RAN1, afterwards UE according to the multicast capability of the RAN1 that is obtained for having multicast capability, and the SGSN0 that obtains in the step 501 is the multicast capability that has multicast capability and self have, and determines that comprehensive multicast capability is for having multicast capability.
Step 511～step 518 is consistent with the description of step 412～step 419 in the flow process shown in Figure 4, for the multicast bearing mode is set up process.
Application Example three
Should be with among the embodiment, UE has multicast capability, and the service access network of initially setting up session has multicast capability, the network area takes place when moving during session is carried out, and target access network does not have multicast capability.And suppose to move when taking place, change has all taken place in SGSN and RAN, and wherein the SGSN of service access network and RAN all have multicast capability, and the SGSN of target access network and RAN all do not have multicast capability.
Referring to Fig. 6, Fig. 6 is obtaining multicast capability and handling the method flow diagram that carries in the Application Example three of the present invention.This flow process comprises the steps:
Step 601～step 603, UE is when routing update, obtain SGSN0 and have multicast capability, from the broadcast of RAN0, obtain RAN0 and have multicast capability, UE is the multicast capability that has multicast capability and self have according to the multicast capability of SGSN0 that is obtained and RAN0 afterwards, determines that comprehensive multicast capability is for having multicast capability.
Step 604～step 607, when initially setting up session, network side is at first set up the transfer of data of unicast bearer mode for UE.AS initiates the inquiry of UE and access network multicast capability to UE then, and UE returns comprehensive multicast capability for having multicast capability to AS, so the definite employing of AS multicast bearing mode.
Step 608～step 612 is consistent with the description of step 412～step 419 in the flow process shown in Figure 4, for the multicast bearing mode is set up process.
The network area during session is carried out, takes place and moves in step 613, and UE moves to RAN1/SGSN1 from RAN0/SGSN0.
In this step, when UE moved to RAN1/SGSN1 from RAN0/SGSN0, because target access network does not have multicast capability, originally the business data transmission of carrying out in the multicast mode can temporarily be interrupted.Step 614～step 616, when UE upgrades in routed domain, obtain SGSN1 and do not have multicast capability, from the broadcast of RAN1, obtain RAN1 and have multicast capability, UE for not having multicast capability, determines that comprehensive multicast capability is not for having multicast capability according to the multicast capability of SGSN1 that is obtained and RAN1 afterwards.
In this step, obtain SGSN1 multicast capability method can also for: SGSN1 sends to SGSN0 with the multicast capability information of self, and SGSN0 indicates the multicast capability information of SGSN1 to UE more then.
Perhaps in this step,, also can need not to obtain the multicast capability information of SGSN1 as inferior preferred version.
Step 617～step 619, UE does not have the information of multicast capability according to determined comprehensive multicast capability to the AS transmission, and AS returns the affirmation response message to UE, and determines to adopt the unicast bearer mode.
Step 620, AS informing network side is the transfer of data that UE sets up the unicast bearer mode.
In this step, the foundation of unicast bearer mode is consistent with flow process of the prior art.
The above Application Example all is that GPRS network is that example is described with the access network, in the practical application, access network can also be other network, as wireless lan (wlan) network etc., the business of using MBMS also can be not limited to IMS etc., and corresponding access network entity and conversation control entity all can change every those of ordinary skill in the art to some extent, all can be equal to enforcement in other systems according to the thought of the embodiment of the invention.Therefore be understandable that; the above is specific embodiments of the invention only, and is not intended to limit the scope of the invention, and is within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. one kind is obtained multicast capability and handles the method for carrying, and it is characterized in that this method comprises:
User equipment (UE) obtains the multicast capability information of access network, and the access network multicast capability information obtained and the multicast capability information of self are reported conversation control entity;
Conversation control entity is determined to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE according to described access network multicast capability information that receives and the multicast capability information of UE.
2. the method for claim 1, it is characterized in that, described UE reports conversation control entity with the access network multicast capability information obtained and the multicast capability information of self: UE determines comprehensive multicast capability information according to the multicast capability information of the access network that is obtained and the multicast capability information of self, and comprehensive multicast capability information is reported conversation control entity; Perhaps UE reports conversation control entity with the multicast capability information of the access network that obtained and the multicast capability information of self.
3. the method for claim 1 is characterized in that, UE initially sets up session; Then this method further comprises: adopt the unicast bearer mode to carry out transfer of data to UE earlier.
4. the method for claim 1 is characterized in that, UE the network area takes place moves; The multicast capability information that described UE obtains access network is: UE obtains the multicast capability information of target access network.
5. method as claimed in claim 4 is characterized in that, described UE take place the network area move for: UE never supports the multicast zone to move to and supports the multicast zone;
The then described target access network multicast capability information of obtaining is: target access network has multicast capability;
Determine the bearing mode that UE adopts to be: unicast bearer mode, or multicast bearing mode.
6. method as claimed in claim 4 is characterized in that, described UE take place the network area move for: UE does not support the multicast zone from supporting the multicast zone to move to;
The then described target access network multicast capability information of obtaining is: target access network does not have multicast capability;
Determine the bearing mode that UE adopts to be: the unicast bearer mode.
7. as each described method in the claim 1 to 6, it is characterized in that described access network is a general packet radio service (GPRS) network;
The multicast capability information that described UE obtains access network is: UE obtains the multicast capability information of RAN from the broadcast of Radio Access Network RAN, obtains the multicast capability information of SGSN when routed domain is upgraded the Indication message of GPRS serving GPRS support node SGSN;
Perhaps be: the multicast capability information of obtaining SGSN and RAN when UE upgrades from routed domain the Indication message of SGSN;
Perhaps be: UE obtains the multicast capability information of RAN from the broadcast of Radio Access Network RAN;
Perhaps be: the multicast capability information of obtaining SGSN when UE upgrades from routed domain the Indication message of SGSN;
Perhaps be: UE obtains the multicast capability information of target SGSN from service SGSN when moving and the SGSN change takes place.
8. method as claimed in claim 7 is characterized in that, described conversation control entity is an application server AS;
Described UE reports conversation control entity with the multicast capability of access network: UE is according to the multicast capability information of RAN that is obtained and SGSN, and the comprehensive multicast capability information of access network is reported AS; Perhaps UE reports AS with the multicast capability information of RAN and the multicast capability information of SGSN; Perhaps UE reports AS with the multicast capability information of RAN as the comprehensive multicast capability information of access network; Perhaps the multicast capability information of SGSN is reported AS as the comprehensive multicast capability information of access network.
9. one kind is obtained multicast capability and handles the system of carrying, and it is characterized in that this system comprises: user equipment (UE), access network entity and conversation control entity, wherein,
The access network entity is used for the multicast capability information to UE transmission access network;
UE is used to receive the multicast capability information of described access network, and the multicast capability information of the access network that received and the multicast capability information of self are reported conversation control entity;
Conversation control entity is used to receive the multicast capability information of described access network and the multicast capability information of UE, according to the multicast capability information that is received, determines to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
10. system as claimed in claim 9 is characterized in that, described access network entity comprises: GPRS serving GPRS support node SGSN and Radio Access Network RAN, wherein,
RAN is used for by broadcast, and self multicast capability information is sent to UE;
SGSN is used for when routed domain is upgraded, and self multicast capability information is sent to UE.
11. system as claimed in claim 9 is characterized in that, described access network entity is SGSN, is used for when routed domain is upgraded, and the multicast capability information of self and RAN is sent to UE; Perhaps a multicast capability information with self sends to UE; Perhaps a multicast capability information with RAN sends to UE.
12. system as claimed in claim 9 is characterized in that, described access network entity comprises: Radio Access Network RAN, be used for by broadcast, and self multicast capability information is sent to UE.
13., it is characterized in that described UE comprises at least as each described system in the claim 9 to 12: multicast capability acquisition module and multicast capability sending module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of access network, and the multicast capability information of the access network that obtained is sent to the multicast capability sending module;
The multicast capability sending module is used for the multicast capability information of the access network that will be received and the multicast capability information of self and sends to conversation control entity.
14., it is characterized in that described conversation control entity comprises at least as each described system in the claim 9 to 12: multicast capability acquisition module and carrying processing module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of UE and access network, and the multicast capability information of being obtained is sent to the carrying processing module;
The carrying processing module is used for according to the multicast capability information that is received, and determines to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
15. system as claimed in claim 14 is characterized in that, described conversation control entity is: application server AS.
16. a subscriber equipment that obtains multicast capability is characterized in that, this user equipment (UE) comprises at least: multicast capability acquisition module and multicast capability sending module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of access network, and the multicast capability information of the access network that obtained is sent to sending module;
The multicast capability sending module is used for the multicast capability information of the access network that will be received and the multicast capability information of self and sends to conversation control entity.
17. subscriber equipment as claimed in claim 16, it is characterized in that, described multicast capability sending module is further used for: go out comprehensive multicast capability information according to the multicast capability information of the access network that is received and the multicast capability information decision of self, comprehensive multicast capability information is sent to conversation control entity.
18. a conversation control entity that obtains multicast capability and handle carrying is characterized in that this conversation control entity comprises at least: multicast capability acquisition module and carrying processing module, wherein,
The multicast capability acquisition module is used to obtain the multicast capability information of user equipment (UE) and access network, and the multicast capability information of being obtained is sent to the carrying processing module;
The carrying processing module is used for according to the multicast capability information that is received, and determines to adopt unicast bearer mode or multicast bearing mode to carry out transfer of data to UE.
19. conversation control entity as claimed in claim 18 is characterized in that, described conversation control entity is: application server AS.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2006101319645A CN101163320B (en) | 2006-10-13 | 2006-10-13 | Method, system and device for obtaining multicast capability and processing bearing |
| PCT/CN2007/070770 WO2008046339A1 (en) | 2006-10-13 | 2007-09-25 | A method, system and apparatus for determing bearing mode |
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| CN2006101319645A CN101163320B (en) | 2006-10-13 | 2006-10-13 | Method, system and device for obtaining multicast capability and processing bearing |
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| WO2014121471A1 (en) * | 2013-02-06 | 2014-08-14 | 华为技术有限公司 | Method, base station and user equipment for data transmission and acquisition |
| CN104284299A (en) * | 2013-07-09 | 2015-01-14 | 中兴通讯股份有限公司 | Cluster multicast decision making method, cluster terminal and cluster server |
| WO2016161655A1 (en) * | 2015-04-10 | 2016-10-13 | 华为技术有限公司 | Multicast service transmission device and method |
| WO2019000364A1 (en) * | 2017-06-30 | 2019-01-03 | 华为技术有限公司 | Communication method and device |
| CN107911301B (en) * | 2017-12-28 | 2020-11-20 | 新华三技术有限公司 | Message forwarding method and device |
| CN113891255B (en) * | 2018-11-27 | 2023-04-11 | 华为技术有限公司 | Communication method, device and system |
| CN110621054B (en) * | 2019-08-16 | 2021-11-16 | 海能达通信股份有限公司 | Routing method, base station and communication system for multimedia broadcast multicast service |
| CN113068275B (en) * | 2020-01-02 | 2024-01-09 | 维沃移动通信有限公司 | Multicast service realization method and device and communication equipment |
| CN111954083A (en) * | 2020-07-29 | 2020-11-17 | 西安万像电子科技有限公司 | Image transmission method, device and system |
| CN114915917A (en) * | 2021-02-10 | 2022-08-16 | 华为技术有限公司 | Method and device for transmitting multicast service |
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| WO2008046339A1 (en) | 2008-04-24 |
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